Beacon



FIG. 1 is a front view of a beacon incorporating a design in accordance with an embodiment of the invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a front perspective view thereof; and,

FIG. 8 is a rear perspective view thereof.

The broken lines depict unclaimed environmental subject matter. 

The ornamental design for a beacon, as shown and described. 